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最近，接手了告警的一个需求。详细需求：监控一个应用的某些指标超标了，要提醒用户，通过企业微信给指定用户发送告警信息；今日自己实现了一下，总结出来分享给大家。

注意：代码亲自编写，已自测通过

前言

通过企业微信给指定用户发送告警信息

一、编码？

1.依赖

<dependencies>
        <!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpcore -->
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpcore</artifactId>
            <version>4.4.13</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpclient -->
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>4.5.12</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/commons-logging/commons-logging -->
        <dependency>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
            <version>1.2</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-api -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.25</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/com.google.code.gson/gson -->
        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
            <version>2.8.6</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.apache.logging.log4j/log4j-core -->
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-core</artifactId>
            <version>2.12.1</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-nop -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-nop</artifactId>
            <version>1.7.25</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
</dependencies>

2.SendWX.java

/** * Created by Domi on 2020/10/21. */
public class SendWX { 
   
    /** * 发送消息的执行方法 * @Param [alertTitle, alertMsg] * @return void **/
    public static void send(String alertTitle, String alertMsg){ 
   
        WeChatMsgSend swx = new WeChatMsgSend();
        try { 
   
            //token--企业微信获取
            String token = swx.getToken("ww78696d5d79e37874", "TczeIo8tQQ8AqtKxAnw380ZNNDS_jaSgNtX2AMs-K7E");
            //发送的数据
            String postdata = swx.createpostdata("SongPengJu", "text", 1000002, "content", "告警信息：" + alertTitle + "\n内容：" + alertMsg);
            //响应结果
            String resp = swx.post("utf-8", WeChatMsgSend.CONTENT_TYPE, (new WeChatUrlData()).getSendMessage_Url(), postdata, token);
            System.out.println("获取到的token======>" + token);
            System.out.println("请求数据======>" + postdata);
            System.out.println("发送微信的响应数据======>" + resp);
        }catch (Exception e){ 
   
            e.getStackTrace();
        }

    }
    /** * 测试 * @Param [args] * @return void **/
    public static void main(String[] args) { 
   
        send("您的应用XXX","告警啦告警啦告警啦告警啦～");
    }
}

3.WeChatMsgSend.java

/** * Created by Domi on 2020/10/21. */
public class WeChatMsgSend { 
   
    private CloseableHttpClient httpClient;

    // 用于提交登录数据
    private HttpPost httpPost;
    // 用于获得登陆后页面
    private HttpGet httpGet;

    public static final String CONTENT_TYPE = "Content-Type";

    SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

    private static Gson gson = new Gson();

    /** * 微信授权请求，GET类型，获取授权响应，用于其他方法截取token * @Param Get_Token_Url * @return String 授权响应内容 **/
    protected String toAuth(String Get_Token_Url) throws IOException { 
   
        httpClient = HttpClients.createDefault();
        httpGet = new HttpGet(Get_Token_Url);
        CloseableHttpResponse response = httpClient.execute(httpGet);
        String resp = "";

        try { 
   
            HttpEntity entity = response.getEntity();
            resp = EntityUtils.toString(entity, "utf-8");
            EntityUtils.consume(entity);
        } catch (Exception e) { 
   
            e.getStackTrace();
        } finally { 
   
            response.close();
        }
        LoggerFactory.getLogger(getClass()).info(" resp:{}", resp);
        return resp;
    }

    /** * corpid应用组织编号 corpsecret应用秘钥 * 获取toAuth(String Get_Token_Url)返回结果中键值对中access_token键的值 * @Param [corpid, corpsecret] * @return java.lang.String **/
    public String getToken(String corpid, String corpsecret) throws IOException { 
   
        WeChatMsgSend sw = new WeChatMsgSend();
        WeChatUrlData uData = new WeChatUrlData();
        uData.setGet_Token_Url(corpid, corpsecret);//拿到token连接
        String resp = sw.toAuth(uData.getGet_Token_Url());//授权信息
        System.out.println("resp=====:" + resp);//输出日志
        try { 
   
            Map<String, Object> map = gson.fromJson(resp, new TypeToken<Map<String, Object>>() { 
   
            }.getType());
            return map.get("access_token").toString();
        } catch (Exception e) { 
   
            e.getStackTrace();
            return resp;
        }
    }


    /** * 创建微信发送请求post数据 touser发送消息接收者 ，msgtype消息类型（文本/图片等）， application_id应用编号。 * 本方法适用于text型微信消息，contentKey和contentValue只能组一对 * @Param [touser, msgtype, application_id, contentKey, contentValue] * @return java.lang.String **/
    public String createpostdata(String touser, String msgtype, int application_id, String contentKey,
                                 String contentValue) { 
   
        WeChatData wcd = new WeChatData();

        wcd.setTouser(touser);
        wcd.setAgentid(application_id + "");
        wcd.setMsgtype(msgtype);
        Map<Object, Object> content = new HashMap<Object, Object>();
        content.put(contentKey, contentValue);
        wcd.setText(content);
        return gson.toJson(wcd);
    }

    /** * @Title 创建微信发送请求post实体，charset消息编码 ，contentType消息体内容类型， * url微信消息发送请求地址，data为post数据，token鉴权token * @Param [charset, contentType, url, data, token] * @return java.lang.String **/
    public String post(String charset, String contentType, String url, String data, String token) throws IOException { 
   
        CloseableHttpClient httpclient = HttpClients.createDefault();
        httpPost = new HttpPost(url + token);
        httpPost.setHeader(CONTENT_TYPE, contentType);
        httpPost.setEntity(new StringEntity(data, charset));
        CloseableHttpResponse response = httpclient.execute(httpPost);
        String resp;
        try { 
   
            HttpEntity entity = response.getEntity();
            resp = EntityUtils.toString(entity, charset);
            EntityUtils.consume(entity);
        } finally { 
   
            response.close();
        }
        LoggerFactory.getLogger(getClass()).info("call [{}], param:{}, resp:{}", url, data, resp);
        return resp;
    }
}

4.WeChatData.java

/** * Created by Domi on 2020/10/21. */
@Data
public class WeChatData { 
   
    private String touser;
    private String msgtype;
    private String agentid;
    private Object text;
}

5.WeChatUrlData.java

/** * Created by Domi on 2020/10/21. */
@Data
public class WeChatUrlData { 
   
    private String corpid;
    private String corpsecret;
    private String Get_Token_Url;
    private String SendMessage_Url;

    public void setGet_Token_Url(String corpid,String corpsecret) { 
   
        Get_Token_Url = "https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid="+corpid+"&corpsecret="+corpsecret;
    }

    public String getSendMessage_Url() { 
   
        SendMessage_Url = "https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token=";
        return SendMessage_Url;
    }

    public void setSendMessage_Url(String sendMessage_Url) { 
   
        SendMessage_Url = sendMessage_Url;
    }
}

二、参数

1.构建自己的企业微信

开始创建企业微信官网https://work.weixin.qq.com/注册，并登陆。
点击‘应用管理’，自建里面创建应用：

2.参数详细获取

然后进入自己创建的应用，找到这两个信息：

对应代码的：

然后打开我的企业最下面有个企业ID：

对应代码的：

最后，打开通讯录：

对应代码：

总结

快去试一试吧～～